a=[1,4,5,6,7,8,8,9,0]
print(a[2:7:2])
b=('aaa','bbb','ccc')
print(b[0:3:2])
a.insert(3,'qqq')
a.insert(4,'ppp')
print(a)
a.append('iii')
print(a)
# print(b[3])
a.pop(3)
print(a)
a.remove('ppp')
print(a)
# a.clear()
print(a)
a.reverse()
print(a)
